Belt-fastener.



I. JACKSON. BELT FASTENER. APPLIOATION FILED r3344, 1910.

Patentd Dec. 6, 1910.

rs NT area.

ISAAC JACKSON, OF GLOSSOP, ENGLAND.

BELT-FASTENER.

To all whom it may concern:

Be it known that I, Isaac JACKSON, a subject of the King of GreatBritain and Ireland, and a resident of Glossop, in the county of Derby,England, have invented new and useful Improvements in Belt-Fasteners, ofwhich the following is a specification.

This invention relates to improvements in means for connecting the endsof driving belts and particularly to fasteners of that type whichcomprise an apertured metal plate adapted to overlap the ends of such abelt and provided on one face with teeth which pass through the belt andwhen clenched deflect portions of the body of the belt into the adjacentaperture to form a connection between the belt and plate sup plementalto that afforded by the teeth.

Particularly the present invention relates to a construction whereby thebody of the fastening plate does not come into direct contact with thebelt but is separated therefrom by a washer or safe of leather or othersuitable material, through which the teeth of the fastener pass andwhich is forced into the aperture in the plate when the teeth areclenched.

In the accompanying drawings, Figure 1 is a perspective viewillustrating a section of a driving belt having its ends connected byfasteners embodying the present inven tion; Fig. 2 is a longitudinalsectional view taken through one of the fasteners; Fig. 3' is a similarView illustrating a modified form of washer or safe; Fig. 4 is a detailsectional view of the washer or safe shown in Fig. 3; Fig. 5 is a planview of such washer; and Fig. 6 is a detail perspective view of one ofthe fasteners.

Referring to the drawings, A, A designate the ends of a driving belt andB designates the body of the metal fastener employed for connecting suchends. Said body may be of any desired outline and size being shown assubstantiallyelliptical in form, and is provided 011 one face withsuitable teeth or spurs B which are adapted to penetrate the body of thebelt and to be clenched against the under face thereof. Such teeth arearranged at opposite sides of an aperture formed in the plate and intowhich when the teeth are clenched, are forced portions of the endsections A, A of the belt to provide a connection between the plate andSpecification of Letters Patent.

Application filed February 24, 19101 Patented Dec. 6, 1910. Serial No.545,839.

fastener which is supplemental to that furnished by the teeth.

To protect the surface of the belt against which the body of thefastener is applied, a washer or safe C of leather or other suitablematerial is placed over the surface of the belt beneath the body of thefastener. This washer is shown as of such size that it projects beyondthe body of the fastener at all points and surrounds the teeth 13. henthe teeth are clenched, both the portions of the belt beneath theaperture in the plate 13 as Well as the section of the washer G beneathsaid aperture will be forced outwardly as shown in Fig. 2, so that saidaperture is completely filled and in some instances, the

deflected portion 0 of the washer will project beyond the outer surfaceof the plate B. Preferably, the walls of the ends of the aperture in thefastening plate are inclined in wardly and upwardly from the lowersurface of the plate to form bearing surfaces which receive the pressureof the deflected portions of the belt and washer and thus relieve tosome extent the strain which is placed upon the teeth. When thedeflection of the belt by clenching the fastening prongs or teeth issufficient to cause a portion of the washer G to project beyond theouter face of the plate B, such projecting portion forms a pad orcushion which may contact with a jockey or idle pulley arrangedadjacentthat face of the belt upon which the fastener is placed, andthereby is avoided the noise and wear which would be incident to themetal fastener striking such a pulley. An increased cushioning effect isobtained by using a washer D of the form shown in Figs. 3 to 5inclusive. In this form of the invention, the washer or safe is made inthe cross sectional form shown in Figs. 3 and 4:, the section thereofwhich extends through the aperture in the fastener being of greaterthickness than the portions thereof which surround the teeth. In casethe washer is provided with a plurality of such projecting sections D,as shown in Fig. 5, it will be seen that the projections act as guidesfor properly positioning the fasteners on the belt.

The washers herein referred to, particularly when of the form shown inFigs. 3 to 5, may be molded from india rubber and thereby the cushioningeffect materially increased.

Having thus described the invention, what is claimed and desired to besecured by Letters Patent, is

l. A belt fastener comprising a perforated plate adapted to be appliedagainst the outer surface of a belt and having a tooth adapted to extendthrough the belt and to force a portion thereof outwardly into aperforation in the plate when clenched against the surface opposite thaton which the plate bears, and a protecting body extending across saidperforation and about the tooth.

2. A belt fastener comprising a plate having therein a perforation andtwo projecting teeth which are separated by said perforation and areadapted to extend through a belt and to force a portion thereof intosaid perforation, and a protecting sheet extending about said teeth andoutwardly through the perforation in the plate.

3. A belt fastener coinprisinga plate having therein a perforation andtwo projecting teeth which are separated by said perforation and areadapted to extend'through a belt and to force a portion thereof intosaid perforation and a protecting sheet extend ing about said teeth andoutwardly through the perforation in the plate the portion of said sheetprojecting beyond the outer face of the plate being of greater thicknessthan the other portions thereof, for the purpose described.

In witness whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

ISAAC J AOKSON Vitnesses WVILLIAM Gno. Hers, JOHN OCONNELL.

